GMAT Statistics & Averages Practice Question #1
A conceptually easy weighted average question.
Learning outcome from this question
1. How to calculate with ease when you to find the weighted average of large numbers without using a calculator?
2. Discussion of two properties of average of set of numbers
a. What happens to the average of a set of numbers if a constant ‘k’ is added to or subtracted from each element in the set?
b. What happens to the average of a set of numbers is a constant k is multiplied to or if a k divides each element in the set?
Question
The average salary of a graduating class of 30 students is $8420 per month and that of another class comprising 20 students is $8438 per month. What is the average monthly salary of the students of the two classes taken together?
Sign up for the most comprehensive and affordable GMAT quant course available online @ https://gmat.wizako.com
Join Wizako’s intensive weekend and weekday classes for GMAT at Chennai. Details @ https://classes.wizako.com/gmat/gmat-coaching-classes-chennai.shtml
Free GMAT quant and GMAT verbal practice questions @ http://qn.wizako.com
#OnlineGMATPrep #GMATOnlineCourse #GMATQuant #GMATCoaching #GMATPreparation #GMATStatistics #GMAT
source
